Interior vs. Exterior Paints: What Are The Key Differences?

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When planning to paint a home, it is essential to get the right paint for the job. For projects outside of the house, exterior paint options are the right choice. For projects inside the home, it is crucial to use interior paint. The essential differences may surprise most homeowners.

Trusting Professionals

Trusting Professionals

When planning any home painting project, choosing a professional painter may be the best option. Portland house painting contractors understand the types of paint and will use the appropriate option to suit the project. Homeowners can be confident that the job will be completed beautifully and adequately without worrying about getting the right paint.

Understanding The Basics Of Paint

Understanding The Basics Of Paint

All paints contain basic components that allow them to provide vibrant beauty to any project. These components include pigments, solvents, additives, and resins. The solvent creates the wet of the paint and evaporates as it dries. The pigments provide color while the resin allows it to stick to surfaces. Various additives are used to produce multiple properties, such as easy cleaning or resistance to mildew.

Exterior Paint

Exterior Paint

Paint on the outside of a home or building is subjected to extreme temperatures, wind, sun, and other weather-related issues that can deteriorate or fade the color. Exterior paint is created with a resin that can withstand these harsh environments. It helps the paint last and makes it resistant to fading, chipping, and peeling.

Interior Paint

Interior Paint

Interior paint is designed to hold up well on the interior walls of a home. Since most homes have a stable temperature inside, a different type of resin can be used. Interior paints tend to use a resin that can hold up better against bumps, scuffs, and other abrasions. Some interior colors have resins that can even make it easier to clean.

Can Interior Paint Be Used Outdoors?

Technically, a homeowner could use interior paint outdoors. However, they would probably be repainting the area in a short time. It is due to interior colors not having the proper resins and additives that protect against the harsh elements. In little time, the paint would fade, crack, or peel.

Can Exterior Paint Be Used Indoors?

Using exterior paint indoors is not a good idea for a variety of reasons. Exterior paint is often much thicker than interior paint due to the additives needed to make it resistant to the weather. This thickness will make it harder to get a clean and even coat on interior walls. It is also less decorative than interior paint. Exterior paint can also be dangerous when used indoors.

The Dangers of Using Exterior Paint Indoors

Most interior paint utilizes water as a solvent. Exterior paints use oils and other chemicals as their solvent. As these solvents evaporate, they can give off volatile organic compounds or VOCs. These VOCs are linked to long-term and short-term health problems. Some of these paints can give off VOCs for days after the paint is applied. Some can even off-gas for years. This makes it important never to use exterior paints indoors.

Understanding and using the proper paint for the project can provide a clean and long-lasting finish. It can also help minimize health risks and other problems homeowners may face when using the wrong paint for a project. If ever unsure about the durability or safety of a type of paint, it may be a good idea to contact a professional for assistance.

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